''Cis castaneus'' is a species of tree-fungus beetles in the family

Ciidae The minute tree-fungus beetles, family (biology), family Ciidae, are a sizeable group of beetles which inhabit Polyporales bracket fungi or coarse woody debris. Most numerous in warmer regions, they are nonetheless widespread and a considerable n ...

. The nematode species ''

Caenorhabditis monodelphis ''Caenorhabditis monodelphis'' is a species of nematodes in the genus ''Caenorhabditis''. It was first collected by J. Raschka in Berlin, Germany in 2001. A second isolate was collected from Norway. It is a free-living species found in galleries ...

'' is a free-living species that can be found in galleries inside of the fungus ''

Ganoderma applanatum ''Ganoderma applanatum'' (the artist's bracket, artist's conk, artist's fungus or bear bread) is a bracket fungus with a cosmopolitan distribution. Description This fungus is parasitic and saprophytic, and grows as a mycelium within the wood o ...

'' (Polyporaceae) which grows on the stump of trees a few centimeters above ground. It is phoretic on ''C. castaneus''.

References

Ciidae Beetles described in 1793 {{Ciidae-stub